Fix slos namespace

[zugao]

Thus PR fixes the name of our appcat slos namespace

Checklist

• The PR has a meaningful title. It will be used to auto generate the
  changelog.
  The PR has a meaningful description that sums up the change. It will be
  linked in the changelog.
• PR contains a single logical change (to build a better changelog).
• Categorize the PR by adding one of the labels:
  bug, enhancement, documentation, change, breaking, dependency
  as they show up in the changelog.
• Link this PR to related issues or PRs.

[wejdross]

Would there be any issues if we migrate appcat-sla bucket? I think we only store data there, but does anything read from it?

[zugao]

Would there be any issues if we migrate appcat-sla bucket? I think we only store data there, but does anything read from it?

I don't think here is the right place. We can discuss this in an already opened ticket or a new one.